Thank you very much, nohal. I'm sorry we got off on the wrong foot, but that's very helpful.
The high resolution catalogue contains 15 files, and the crude resolution basemap in the
installation package only 3 - "poly", "borders" and "rivers" with "-c-1" or "_c" in the filename.
I thought that perhaps you might've hardwired
OpenCPN might to read only those three files in the Contents/SharedSupport/gshhs/ directory, and it might now ignore the _f, _h versions of the file.
It's late here so I'm going to
bed. I'll try with the newer versions tomorrow. I do appreciate your patience.